py/parse: Make mp_parse_node_extract_list return size_t instead of int.

Because this function can only return non-negative values, and having the
correct return type gives more information to the caller.

1 files changed, 1 insertions, 1 deletions

diff --git a/py/parse.h b/py/parse.h
index 096386238..4ed8a7ad1 100644
--- a/py/parse.h
+++ b/py/parse.h
@@ -85,7 +85,7 @@ static inline mp_parse_node_t mp_parse_node_new_leaf(size_t kind, mp_int_t arg)
 bool mp_parse_node_is_const_false(mp_parse_node_t pn);
 bool mp_parse_node_is_const_true(mp_parse_node_t pn);
 bool mp_parse_node_get_int_maybe(mp_parse_node_t pn, mp_obj_t *o);
-int mp_parse_node_extract_list(mp_parse_node_t *pn, size_t pn_kind, mp_parse_node_t **nodes);
+size_t mp_parse_node_extract_list(mp_parse_node_t *pn, size_t pn_kind, mp_parse_node_t **nodes);
 void mp_parse_node_print(mp_parse_node_t pn, size_t indent);
 
 typedef enum {